We may have found other answers which could help you.
Click here for Reset Tamper Pressedturn off door chime melcom st6000?
sensor beeping in sone 3?
How can I fix my Melcom ST6500 alarm system?
Melcom ST6000: I disconnect a sensor now a problem?
i need to get the melcom st6000 working?
i have a melcom st6000 that keeps going off?